New images of comet NEOWISE (C/2020 F3) show rapidly expanding spiral features in its coma produced by the rotation of its 5-km (3-mile) wide nucleus.
These...
A team of astrobiologists from NASA’s Goddard Space Flight Center and the Carnegie Institution for Science has found a wide diversity of amino acids...
A type of meteorite called an enstatite chondrite has similar isotopic composition to terrestrial rocks and thus may be representative of the material...
An international team of scientists has found interstellar iron-60, a radioactive isotope with a half-life of 2.6 million years that is predominantly produced...
A new image from the NASA/ESA Hubble Space Telescope shows the coma of comet C/2020 F3 (NEOWISE) and its dusty output.
This image of comet C/2020 F3 (NEOWISE)...
Planetary researchers from the University of Texas at Austin and NASA’s Marshall Space Flight Center have used dry paleolakes and riverbeds to determine...
In a paper published in the Astrophysical Journal Letters, Harvard University astrophysicists Avi Loeb and Amir Siraj show that an equal-mass stellar companion...
A small near-Earth asteroid designated 2020 QG safely flew past our planet on August 16 at 12:08 a.m. EDT (August 15 at 9:08 p.m. PDT) at a distance of...
A team of professional astronomers and citizen scientists from the Backyard Worlds: Planet 9 project has spotted 95 new brown dwarfs near the Sun.
An artist’s...
‘Oumuamua, a recently-discovered cigar-shaped object of extrasolar origin, is not made of molecular hydrogen ice after all, according to a new study...
High-resolution observations from NASA’s Dawn spacecraft of mysterious bright spots (faculae) in Occator crater on the dwarf planet Ceres suggest the...
The trojan asteroid (3548) Eurybates, one of the targets of NASA’s upcoming Lucy mission, has a tiny moon.
This image of Eurybates and its moon (circled)...
A new study suggests that during Jupiter’s violent storms, hailstones form from a cooled mixture of water and ammonia gas, similar to the process in...
Taking advantage of a total lunar eclipse in January 2019, astronomers using the NASA/ESA Hubble Space Telescope have measured the amount of ozone in the...
The heliosphere is a giant magnetic bubble that contains our Solar System, the solar wind and the solar magnetic field. Outside the heliosphere is the...
NASA’s Curiosity rover has seen a lot since August 5, 2012, when it first set its wheels inside the huge basin of Gale Crater.
Curiosity rover took this...
The southern highlands of Mars are dissected by hundreds of ancient valley networks (3.9-3.5 billion years old), which are evidence that water once sculpted...
Using the high-angular resolution observations from ESO’s Very Large Telescope (VLT), astronomers have determined the 3D shape, diameter and density...
Other stars could have as many as seven Earth-like planets in the absence of farther out giant planets, according to a new study led by the University...
